Hi again Moses
Endless number of designs to choose from here https://www.google.no/search?q=wicking+bed&client=firefox-b-ab&tbm=isch&tbo=u&source=univ&sa=X&ved=0ahUKEwiMnd6PqM_VAhWKbFAKHdCzDLEQsAQIPA&biw=1244&bih=694
Pick one that fits your local easy/cheap/free available materials and tools.
Old Prospector have some nice designed small wicking buckets in his photo album have a look at them, they might be a good alternative
http://aquaponicsnation.com/forums/profile/4316-old-prospector/?tab=node_gallery_gallery
cheers

Hi Nsidibe
If you go to the dowload section http://aquaponicsnation.com/forums/files/
You will find all the original docs on iavs, if you are looking for "recent" or "new builds" you will find some in the members system section you can also use the advanced search function and use tags (search words) like iavs, sandbeds, sandfilter ...................
Also you can go directly to the iavs web site http://iavs.info/
cheers

Hi
Well well this was a lousy round, worst results erver on my part.
One more of the remaining 16 eggs peeped, but I had to "help" them hatch and only 4 of the 5 made it.
Should probbably have "helped" them a bit earlier, allways a bit hesitant to help as I have experienced to often that those that can't make it out on their own, tend to be so weak that they die anyways.
so still 15 eggs in the incubator with no signs of life on day 36 (today) will leave them in untill tomorrow and then do a autopsy.
What I have noticed is that all the eggs that have hatched are marked with the same date of collection 10/6 so I will contact the lady I bought them from and ask her what happen after that date in her pen or with the other eggs that was collected on later dates, she might hold the answer to this terrible result.
GOPR8044.MP4
GOPR8057.MP4
cheers

Hi Julio
Welcome to APN/HQ
You'll fine numerous hybrid systems amongst the APN forum members, as long as the fish loop gets adequate water filtering any growing system is fine.
Strider's build thread might be a good read for you
Also Lukeboshier's threads might be of interest for you (he is located in South Africa like you) http://aquaponicsnation.com/forums/profile/2084-lukeboshier/?do=content&type=forums_topic&change_section=1
cheers

Hi Vini375
Welcome to APN/HQ
The nutrients will stay in the water no matter how long the distance you run it, unless they are used by plants(algea),micro organisms, deluted, gassed of etc. and finaly return to the fish tank.
I guess it,s more for practical reasons you would have to walk around it, or build cross walkways, and/or head loss if you have to pipe/pump the water back to fishtanks for long distances.
cheers